Nick Mott

Close to 100 rural Montanans are taking on one of the largest corporations in the world Tuesday before the U.S. Supreme Court.

Residents of Opportunity and Crackerville, Mont., say the Atlantic Richfield Co. — owned by BP — needs to go beyond what federal Superfund law requires and clean up arsenic pollution left over from a century of mining.

The number of people using goats to pack gear, game and food into the backcountry is rising rapidly, and national forests in at least 10 western states have proposed partial pack goat bans to prevent the spread of pathogens that could prove deadly to the west's iconic populations of bighorn sheep.